sponsored by ASTM Committee E-47 on Biological Effects and Environmental Fate, Atlanta, GA, 16-18 April 1989 ; W. G. Landis and W. H. van der Schalie, editors
sponsored by the American Institute of Biology and the Applied and Aquatic Section of the Ecological Society of America and ASTM Committee E-47 on Biological Effects and Environmental Fate, Grand Forks, ND, 8 Aug. 1983 ; Terence P. Boyle, editor